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ICD-10-CM Current in FY 2027

C50.5

Malignant neoplasm of lower-outer quadrant of breast

Release
FY 2027
Effective
Official source (opens in a new tab)

Hierarchy

Where C50.5 sits in the official hierarchy. Each level is the code it is classified under.

  1. C50 Parent Malignant neoplasm of breast
  2. C50.5 This code Malignant neoplasm of lower-outer quadrant of breast

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Includes

connective tissue of breast

Inherited from C50 — Malignant neoplasm of breast

Includes

Paget's disease of breast

Inherited from C50 — Malignant neoplasm of breast

Includes

Paget's disease of nipple

Inherited from C50 — Malignant neoplasm of breast

Excludes1

skin of breast ( C44.501 , C44.511 , C44.521 , C44.591 )

Inherited from C50 — Malignant neoplasm of breast

Use Additional Code

code to identify estrogen, and other hormones and factors receptor status ( Z17 .-)

Inherited from C50 — Malignant neoplasm of breast

More Specific Codes

2 codes under C50.5

Version History

How C50.5 appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

    Malignant neoplasm of lower-outer quadrant of breast

  2. FY 2026 Effective

    Unchanged

    Malignant neoplasm of lower-outer quadrant of breast

Related Codes

Other codes under C50

Data Source

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

Release
FY 2027
Effective
Source file
icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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